Borealis Flume Alloy SRAM Eagle NX 12 speed

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Collections: Flume & Telluride Aluminum Fat Bikes

Product type: Fat Bike

Vendor: Borealis Bikes Canada

Tags: alloy, aluminum, bike, fat, fatbike, flume

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Description

All new for 2019!  The 12 speed Eagle NX Flume is simply the best alloy Fat Bike on the market in its class.  Sporting carbon bars, carbon seat post and carbon fork, this ride is ready to go into any adventure you can imagine.  Standard wheelset includes HED single wall alloy rims ready for tubeless set up. Select the tire which best fits your season and terrane for maximum riding enjoyment.  Named after trails in Breckenridge and a Class 5 drop along the Arkansas River, the Flume won’t disappoint!

Fatbiking adventurers know that inspiration matters, and a ride (or bike) is only as good as the idea that created it. The expedition-ready Flume capitalizes on all the sweetness of the Crestone, but does so in lightweight, 6000-series aluminum. Up mountains, down glaciers and across deserts, the Flume is ready for action.

There are all kinds of alloy fat bikes on the market, but none with the Flume’s purebred heritage. The custom tubeset mates ideal, high-performance geometry with competition-ready spec. But if pedaling across our blue planet is more your speed, the Flume will speed you through.

Highlights:

- The Flume is built on an alloy frame that draws on all our experience in making fat bikes at a much lower price

- All aluminum frame with careful attention to finish details

- Borealis unique geometry for the best ride experience

- Reduced stand over height

Photos DO NOT reflect actual build, please refer to specifications located below for more information.  Some items may be changed to same quality components depending on availability.

Specs:

Frame

Borealis Flume

Fork

Borealis Carbon Rigid Fork or RL Bluto

Headset

Borealis

Hubs

Borealis: Front 15×150 Rear 12×197

Rims

Mulefut Alloy 26 x 80mm

Spokes

Wheelsmith Black

Nipples

Wheelsmith Silver Brass

Tires

see options

Bar

Borealis Carbon Bar 35mm

Stem

Borealis 70mm

Post 

Borealis Carbon Seatpost

Saddle

Borealis

Grips

Ergon GA30

Crankset

SRAM Eagle Alloy GX w/30T Chain Ring

Rear Derailleur

SRAM Eagle NX 12 Speed

Chain

KMC X12

Cassette

SRAM PG-1230 10-50

Shifters

SRAM Eagle NX 12 Speed

Brakes

SRAM Level T w/Centerline 160/160

DT/CS Protector

Lizard Skins

Weight

~28lbs   +2lbs for Bluto

GEOMETRY & SIZING

Borealis offers four frame designs with unique fit and geometry to suit your every Fat Bike need. Begin by taking a rough size approximation on the chart below that is based on height, then select the corresponding bike with your fit needs by using the geometry chart further below. We recommend a similar fit to you mountain bike, so grab a measuring tape and dial it in.

RIDER HEIGHT RECOMMENDATIONS

Based on our research, riders at the heights below will usually take the corresponding frame size. If you’re at a transitional height that spans two sizes, look at the geometry chart to get the Stack and Reach you like based on other bikes you are comfortable on.

 

GEOMETRY CHART

Stack and Reach are the fundamental fit elements, they are both measured relative to the bottom bracket. When choosing the Borealis that is right for you, it’s important to find a balance in these measurements to ensure the best performance.

All sales are final, no returns. All frames are covered by a 5 year warranty and crash replacement program.

S M L XL S M L XL
Effective Top Tube 23.78 in 24.02 in 24.8 in 25.59 in 604 mm 610 mm 630 mm 650 mm
Seat Tube Center to Top 15 in 17.01 in 19.06 in 21.02 in 381 mm 432 mm 484 mm 534 mm
Head Tube 4.13 in 4.72 in 5.31 in 5.91 in 105 mm 120 mm 135 mm 150 mm
Seat Tube Angle 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg
Head Tube Angle 70 deg 70 deg 70 deg 70 deg 70 deg 70 deg 70 deg 70 deg
Standover Height Due to various rim and tire options stand over is not identified.
Chainstay 17.91 in 17.91 in 17.91 in 17.91 in 455 mm 455 mm 455 mm 455 mm
BB Drop 2.36 in 2.36 in 2.36 in 2.36 in 60 mm 60 mm 60 mm 60 mm
Reach 16.04 in 16.65 in 17.22 in 17.76 in 407.3 mm 423 mm 437.5 mm 451.2 mm
Stack 23.50 in 24.05 in 24.61 in 25.16 in 597 mm 610.9 mm 625 mm 639.1 mm

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